Synthesis of Graphene oxide/Porphyrin Nanocomposite for Photocatalytic Degradation of Crystal Violet Dye

Abstract

A novel nanocomposite was synthesized by covalent functionalization of graphene oxide (GO) with 5,10,15,20‐tetrakis(4‐hydroxyphenyl)porphyrinatoiron (III) chloride (Fe−THPP) via an ester linkage. The synthesized nanocomposite was characterized by various techniques such as XPS, Raman spectroscopy, BET, IR, UV‐Visible, TGA, SEM, and EDX. The synthesized nanocomposite exhibited appreciable interaction with crystal violet (CV) dye with a detection limit of 2.6×10−6 μg/mL and binding constant of 35.93×103 ppm−1 which ensured the high concentration of CV dye on the surface of synthesized photocatalyst. The nanocomposite was effectively utilized in the photo‐degradation of CV dye under visible light irradiation. The photo‐degradation efficiency was remarkably high (93.45 %) with a low catalytic dosage of 0.4 mg/L within 80 minutes. The nanocomposite exhibited good stability and reusability and thereby can be used in the photocatalytic degradation processes to treat wastewater.

When porphyrins meet 2D materials: spectroscopic and photocatalytic properties

“…Raveena et al developed a nanocomposite crafted by covalently binding GO with FeTPPH through an ester linkage. 148 The resulting nanocomposite demonstrated a strong affinity for crystal violet (CV) dye, with a significant detection limit and binding constant, enhancing the concentration of the dye on the photocatalyst surface. Exhibiting a high photodegradation efficiency of 93.45% for CV dye under visible light within 80 minutes at a low catalyst dosage, the nanocomposite proved to be stable and reusable, showing potential for wastewater treatment applications.…”